Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Optimum Designs of 2 Segment LED Reflectors for Various Light Output Distributions on the Surface of an LED Chip

LED 칩 표면 광량 분포 변화에 따른 2단 반사컵의 최적 설계

  • Yim, Hae-Dong (School of Information and Communication Engineering, Inha University, LED-Smart Technology Advanced Research Center (LED-STAR)) ;
  • Lee, Dong-Jin (School of Information and Communication Engineering, Inha University, LED-Smart Technology Advanced Research Center (LED-STAR)) ;
  • Kim, Yang Gyeom (School of Information and Communication Engineering, Inha University, LED-Smart Technology Advanced Research Center (LED-STAR)) ;
  • Jeong, Jang Hee (Eastern Tech, Inc.) ;
  • Lee, Seung-Gol (School of Information and Communication Engineering, Inha University, LED-Smart Technology Advanced Research Center (LED-STAR)) ;
  • O, Beom-Hoan (School of Information and Communication Engineering, Inha University, LED-Smart Technology Advanced Research Center (LED-STAR))
  • 임해동 (인하대학교 정보통신공학과 고성능 LED 조명모듈 핵심기술 연구센터(LED-STAR)) ;
  • 이동진 (인하대학교 정보통신공학과 고성능 LED 조명모듈 핵심기술 연구센터(LED-STAR)) ;
  • 김양겸 (인하대학교 정보통신공학과 고성능 LED 조명모듈 핵심기술 연구센터(LED-STAR)) ;
  • 정장희 (이스턴테크) ;
  • 이승걸 (인하대학교 정보통신공학과 고성능 LED 조명모듈 핵심기술 연구센터(LED-STAR)) ;
  • 오범환 (인하대학교 정보통신공학과 고성능 LED 조명모듈 핵심기술 연구센터(LED-STAR))
  • Received : 2012.09.21
  • Accepted : 2012.12.07
  • Published : 2012.12.25
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Abstract

It is important to control the beam pattern of an LED by the design of a reflector. The optimum conditions of the structure parameters for the 2 segment LED reflector are analyzed and compared as they vary depending on the various intensity distributions of light output on the LED chip surface. It is also interesting that combining various types of reflectors is possible to give several efficient beam patterns, such as the maximum intensity profile or relatively wide controllability of beam angle.

배광 분포 제어가 용이한 높이 분할방식 반사컵 설계를 수행함에 있어서, 배광 설계시 배광 분포의 설계오차를 줄이기 위하여, LED 칩 표면상의 광량 분포 변화에 따른 반사컵의 배광 특성 변화 경향성을 파악하여 최적 설계에 적용하였다. LED 패키지의 반사컵을 높이에 따라 2단 분할하여 최적 설계한 결과, 교차형과 비교차형의 조합 설계를 통해서 최대 광도와 균일도를 조절하거나 암흑 영역을 없애는 등 다양한 기능성 설계가 가능했다.

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References

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